greys. now researchers think they've found why the native reds numbers may be declining so rapidly by comparing the two breed's problem solving skills. the test, extracting nuts from a box! professor stephend it is a cunningly devised system, devised by my colleague, from hong kong, in which the easy solution, what looks like the easy solution, what looks like the easy solution, is not the right solution, it does not work. so then they have to try to find the correct solution, which is more obscure. we are watching pictures, just now, and it is absolutely fascinating, watching them, so you found that the grey squirrels had better problem—solving skills? grey squirrels had better problem-solving skills? on average, we put these apparatuses out in the natural environment of the squirrels, for the grey squirrels here on the university of exeter campus, infact here on the university of exeter campus, in fact some of them, in some cases, close to where i am standing. red squirrels, we don't have them here, so we had to go to the isle of arendt, in scotland, where the national trust of scotland we re very where the national trust of scotland were very helpful in providing us with sites where we